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If A>0 , B>0 and A+B=∩/3 , then the maximum value of tan A tan B is a) 1/6 b)1/3 c)1/2 d)1 ans b) .............solve it ...

\large \int_{0}^{\Pi /2}{\frac{dx}{9 + 16cos^{2}x}} ...

Azide ion exhibts an N-N bond order of 2 and may be represented by resonance structures,I,II,III given below *Image* which of the above structures will contribute more to the resonance hybrid ...

*Image* I think the ans should be B) but it is not the ans. Please if any one knows tell me. ...

If f(x)=\frac{1-x}{1+x} , Then find f2010(x) = here f2010(x) = fofof................2010 times. ...

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Consider the curve \mid y\mid = \mid x 2 - 4 \mid x\mid \mid A) Area bounded by curve is 128/3 sq.units. B) Area bounded by curve is 64/3 sq. units. C) Number of tangents drawn from (8,0) may be 4. D) Number of tangents drawn ...

What is the molality of 15% solution of H2SO4 by mass?? ...

In an unconstrained elastic collision between two smooth balls moving along x-axis, velocity of the lighter ball changes from \vec{v} 1(before the collision) to \vec{v} 2 ( after collision). If \vec{v} is the velocity of cent ...

Q1. STMNT 1: Order of a reaction cannot be determined from balanced stoichiometric equation STMNT 2: Order may not be equal to molecularity Q2. STMNT 1: One mole of CO2 occupies 0.4 L at 300 K and 40 atm STMNT 2: CO2 is more ...

(x-4x^3)/x+6≥0 ...

Why does only Cu2+ form precipitate by passing H2S gas through an acidified solution but not Zn2+? ...

Q1. Which of the following isomers of dichlorocyclohexane are optically active? (a) 1,1 dichloro (b) 1,2 (cis) dichloro (c) 1,2 (trans) dichloro (d) 1,3 (cis) dichloro (e) 1,3 (trans) dichloro (f) 1,4 (cis) dichloro (g) 1,4 ( ...

An SN2 reaction at an asymmetric Carbon of a compound always gives a) An enantiomers of the substrate b) A product with opposite optical rotation c) A mixture of diastereomers d) Single stereoisomer ...

Q1 If ΔHionisation (HCN)=45.2 kJ/mol and ΔHionisation (CH3COOH)=2.1 kJ/mol.Then whats relation ship between pKa of both ?? I am getting pKa(HCN)=45.2/2.1 pKa(CH3COOH) Q2 Find change in deg of disociation be addn of 8.2 gm o ...

1. A- Amplitude modeulation can be obtained using a transistor R- There is need of positive feedback to obtain AM. 2. A- (For a prism of refracting angle 60º and refractive index, μ = underroot2 , the Minimum deviation is 3 ...

A and B are two independent witnesses (i.e there is no collusion between them) in a case.The probability that A,B speaks truths are x and y respectively.A and B agree in a certain statement.Find the probability that the state ...

The set of values possible of θ in [-Π,Π], such that 1-sin θ / 1+sin θ is equal to sec θ- tan θ is a)[0,Π/2] b)[0,Π/2)υ(Π/2,Π] c)[-Π,0] d)(-Π/2, Π/2) ans d ...

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If cos4θ.sec2α, 1/2 and sin4θ.cosec2α are in AP, then cosec8θsec6α , 1/2, sin8θ.cosec6α are in a)AP b)GP c)HP d)none ans a) ...

*Image* 1) A spring is resting inside a tumbler of liquid of density ρ..and a mass m of densityy d is just placed on the spring so that there is no expansion...as shown in the figure... now the mass is slowly descended into ...

1. Which of the following statement regarding the SN1 reaction shown by alkyl halide is not correct? a) (The added nucleophile plays no kinetic role in SN1 reaction.) b) (The SN1 reaction involves the inversion of configurati ...

A thin rod of length L is lying along the x - axis with its ends at x=0 and x= L . Its linear density (mass/length) varies with x as k(x/l)n where n can be zero or any positive number. If the position xCM of the centre of mas ...

(In a double slit expriment, the two cohunt beams have slightly different intensities I and I + lI (lI << I). Show that the resultant intersity at the maxima is nearly 4I while that at minima is (dI)^2/4I ...

If a point P moves inside an equilateral triangle of side length 3 unit such that it is nearer to angle bisectors of the triangle than to any of its sides, then what is the area traced by P? ...

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The image of the plane x-y+z+6=0 with respect to the plane mirror 4x-2y-6z+14=0 is ax+by+cz+6=0, then the value of cos-1a+cos-1b+cos-1c is equal to A)pi B)2 pi C)3 pi/2 D) 3 pi ...

1.arrange in order of Increasing ionic size.. Na+, Mg2+, Al3+, F- 2.arrange in order of Increasing first ionization enthalpy B , C , N, O ...

plz solve A(z1) , B(z2) and C(z3) are 3 points lying on the curve |z|= 3 1. If z2z1+ z2z + z3=0 has one root of modulus unity. z1,z2,z3are in: a)AP b)Gp c)HP D)all of the above 2.If z2z1+ z2z + z3=0 and z2z2+ z3z + z1=0 each ...

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